I had a very runny nose, am a clap user. My doctor put me on nasacort, zertec d in the morning zertec in the evening and singular at bedtime. After a week on the meds, it has now turned to a very full head with greenish yellow mucus a raw, sore throat, horsiness, a cough that hurts my head and my chest which seems to have a lot of mucus too. Some of my coughs go straight down my right chest about an inch wide to the top of my breast. I have some Mucinex 600mg extended release. Can I stop the other meds and take the Mucinex to relieve the congestion or should I just take in in addition to what I am already taking.